Objective: The main purpose of this study was to predict the behavioral problems of cochlear implant users by their language ability and secure attachment based on the mediating role of self-regulation. Method: In this correlational study, 114 cochlear implant users in the age range of 3-7 years for whom at least one year had passed since the implant surgery were selected via convenience sampling. A test of language ability and the Structured Observation of Behavioral Regulation were administered on children, and their mothers responded to the Private Speech Scale and Preschool Children Behavioral problems questionnaire. Path analysis was employed in order to analyze the data. Results: The results showed that language ability (b=0.60, p<0.01) predicted 36% of the variance of private speech. Also, language ability (b=0.45, p<0.01) and private speech (b=0.28, p<0.01) predicted 52% of self-regulation. Finally, language ability (b=-0.23, p<0.01) with the mediating role of private speech (b=-0.33, p<0/01) and self-regulation (b=-0.29, p<0.01) predicted 43% of the variance of behavioral problems. Conclusion: Behavioral problems can be predicted by language ability, with the mediating role of private speech and self-regulation, in cochlear implant users. This result can apply in prediction and rehabilitation programs for reducing behavioral problems in the target group.